
SECTION MBR vstart=0x7c00
    mov ax, cs
    mov ds, ax
    mov es, ax
    mov ss, ax
    mov fs, ax
    mov sp, 0x7c00
    mov ax, 0xb800
    mov gs, ax

    mov ax, 0x600
    mov bx, 0x700 
    mov cx, 0
    mov dx, 0x184f

    int 0x10

    mov byte [gs:0x00], '1'
    mov byte [gs:0x01], 0xA4
    mov byte [gs:0x02], ' '
    mov byte [gs:0x03], 0xA4

    mov byte [gs:0x04], 'M'
    mov byte [gs:0x05], 0xA4

    mov byte [gs:0x06], 'B'
    mov byte [gs:0x07], 0xA4

    mov byte [gs:0x08], 'R'
    mov byte [gs:0x09], 0xA4


    jmp $

    times 510-($-$$) db 0
    db 0x55, 0xaa